1 /*
2 * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.internal.misc;
27
28 import java.lang.module.ModuleDescriptor;
29 import java.util.jar.JarFile;
30 import java.io.Console;
31 import java.io.FileDescriptor;
32 import java.io.FilePermission;
33 import java.io.ObjectInputStream;
34 import java.io.RandomAccessFile;
35 import java.security.ProtectionDomain;
36 import java.security.AccessController;
37
38 /** A repository of "shared secrets", which are a mechanism for
39 calling implementation-private methods in another package without
40 using reflection. A package-private class implements a public
41 interface and provides the ability to call package-private methods
42 within that package; the object implementing that interface is
43 provided through a third package to which access is restricted.
44 This framework avoids the primary disadvantage of using reflection
45 for this purpose, namely the loss of compile-time checking. */
46
47 public class SharedSecrets {
48 private static final Unsafe unsafe = Unsafe.getUnsafe();
49 private static JavaUtilJarAccess javaUtilJarAccess;
50 private static JavaLangAccess javaLangAccess;
51 private static JavaLangModuleAccess javaLangModuleAccess;
52 private static JavaLangReflectModuleAccess javaLangReflectModuleAccess;
53 private static JavaLangInvokeAccess javaLangInvokeAccess;
54 private static JavaLangRefAccess javaLangRefAccess;
55 private static JavaIOAccess javaIOAccess;
56 private static JavaNetInetAddressAccess javaNetInetAddressAccess;
57 private static JavaNetHttpCookieAccess javaNetHttpCookieAccess;
58 private static JavaNetSocketAccess javaNetSocketAccess;
59 private static JavaNetUriAccess javaNetUriAccess;
60 private static JavaNetUrlClassLoaderAccess javaNetUrlClassLoaderAccess;
61 private static JavaNioAccess javaNioAccess;
62 private static JavaIOFileDescriptorAccess javaIOFileDescriptorAccess;
63 private static JavaIOFilePermissionAccess javaIOFilePermissionAccess;
64 private static JavaSecurityProtectionDomainAccess javaSecurityProtectionDomainAccess;
65 private static JavaSecurityAccess javaSecurityAccess;
66 private static JavaUtilZipFileAccess javaUtilZipFileAccess;
67 private static JavaUtilResourceBundleAccess javaUtilResourceBundleAccess;
68 private static JavaAWTAccess javaAWTAccess;
69 private static JavaAWTFontAccess javaAWTFontAccess;
70 private static JavaBeansAccess javaBeansAccess;
71 private static JavaObjectInputStreamAccess javaObjectInputStreamAccess;
72 private static JavaIORandomAccessFileAccess javaIORandomAccessFileAccess;
73
74 public static JavaUtilJarAccess javaUtilJarAccess() {
75 if (javaUtilJarAccess == null) {
76 // Ensure JarFile is initialized; we know that that class
77 // provides the shared secret
78 unsafe.ensureClassInitialized(JarFile.class);
79 }
80 return javaUtilJarAccess;
81 }
82
83 public static void setJavaUtilJarAccess(JavaUtilJarAccess access) {
84 javaUtilJarAccess = access;
85 }
86
87 public static void setJavaLangAccess(JavaLangAccess jla) {
88 javaLangAccess = jla;
89 }
90
91 public static JavaLangAccess getJavaLangAccess() {
92 return javaLangAccess;
93 }
94
95 public static void setJavaLangInvokeAccess(JavaLangInvokeAccess jlia) {
96 javaLangInvokeAccess = jlia;
97 }
98
99 public static JavaLangInvokeAccess getJavaLangInvokeAccess() {
100 if (javaLangInvokeAccess == null) {
101 try {
102 Class<?> c = Class.forName("java.lang.invoke.MethodHandleImpl");
103 unsafe.ensureClassInitialized(c);
104 } catch (ClassNotFoundException e) {};
105 }
106 return javaLangInvokeAccess;
107 }
108
109 public static void setJavaLangModuleAccess(JavaLangModuleAccess jlrma) {
110 javaLangModuleAccess = jlrma;
111 }
112
113 public static JavaLangModuleAccess getJavaLangModuleAccess() {
114 if (javaLangModuleAccess == null) {
115 unsafe.ensureClassInitialized(ModuleDescriptor.class);
116 }
117 return javaLangModuleAccess;
118 }
119
120 public static void setJavaLangReflectModuleAccess(JavaLangReflectModuleAccess jlrma) {
121 javaLangReflectModuleAccess = jlrma;
122 }
123
124 public static JavaLangReflectModuleAccess getJavaLangReflectModuleAccess() {
125 if (javaLangReflectModuleAccess == null)
126 unsafe.ensureClassInitialized(java.lang.reflect.Module.class);
127 return javaLangReflectModuleAccess;
128 }
129
130 public static void setJavaLangRefAccess(JavaLangRefAccess jlra) {
131 javaLangRefAccess = jlra;
132 }
133
134 public static JavaLangRefAccess getJavaLangRefAccess() {
135 return javaLangRefAccess;
136 }
137
138 public static void setJavaNetUriAccess(JavaNetUriAccess jnua) {
139 javaNetUriAccess = jnua;
140 }
141
142 public static JavaNetUriAccess getJavaNetUriAccess() {
143 if (javaNetUriAccess == null)
144 unsafe.ensureClassInitialized(java.net.URI.class);
145 return javaNetUriAccess;
146 }
147
148 public static void setJavaNetUrlClassLoaderAccess(JavaNetUrlClassLoaderAccess jnua) {
149 javaNetUrlClassLoaderAccess = jnua;
150 }
151
152 public static JavaNetUrlClassLoaderAccess getJavaNetUrlClassLoaderAccess() {
153 if (javaNetUrlClassLoaderAccess == null)
154 unsafe.ensureClassInitialized(java.net.URLClassLoader.class);
155 return javaNetUrlClassLoaderAccess;
156 }
157
158 public static void setJavaNetInetAddressAccess(JavaNetInetAddressAccess jna) {
159 javaNetInetAddressAccess = jna;
160 }
161
162 public static JavaNetInetAddressAccess getJavaNetInetAddressAccess() {
163 if (javaNetInetAddressAccess == null)
164 unsafe.ensureClassInitialized(java.net.InetAddress.class);
165 return javaNetInetAddressAccess;
166 }
167
168 public static void setJavaNetHttpCookieAccess(JavaNetHttpCookieAccess a) {
169 javaNetHttpCookieAccess = a;
170 }
171
172 public static JavaNetHttpCookieAccess getJavaNetHttpCookieAccess() {
173 if (javaNetHttpCookieAccess == null)
174 unsafe.ensureClassInitialized(java.net.HttpCookie.class);
175 return javaNetHttpCookieAccess;
176 }
177
178 public static void setJavaNetSocketAccess(JavaNetSocketAccess jnsa) {
179 javaNetSocketAccess = jnsa;
180 }
181
182 public static JavaNetSocketAccess getJavaNetSocketAccess() {
183 if (javaNetSocketAccess == null)
184 unsafe.ensureClassInitialized(java.net.ServerSocket.class);
185 return javaNetSocketAccess;
186 }
187
188 public static void setJavaNioAccess(JavaNioAccess jna) {
189 javaNioAccess = jna;
190 }
191
192 public static JavaNioAccess getJavaNioAccess() {
193 if (javaNioAccess == null) {
194 // Ensure java.nio.ByteOrder is initialized; we know that
195 // this class initializes java.nio.Bits that provides the
196 // shared secret.
197 unsafe.ensureClassInitialized(java.nio.ByteOrder.class);
198 }
199 return javaNioAccess;
200 }
201
202 public static void setJavaIOAccess(JavaIOAccess jia) {
203 javaIOAccess = jia;
204 }
205
206 public static JavaIOAccess getJavaIOAccess() {
207 if (javaIOAccess == null) {
208 unsafe.ensureClassInitialized(Console.class);
209 }
210 return javaIOAccess;
211 }
212
213 public static void setJavaIOFileDescriptorAccess(JavaIOFileDescriptorAccess jiofda) {
214 javaIOFileDescriptorAccess = jiofda;
215 }
216
217 public static JavaIOFilePermissionAccess getJavaIOFilePermissionAccess() {
218 if (javaIOFilePermissionAccess == null)
219 unsafe.ensureClassInitialized(FilePermission.class);
220
221 return javaIOFilePermissionAccess;
222 }
223
224 public static void setJavaIOFilePermissionAccess(JavaIOFilePermissionAccess jiofpa) {
225 javaIOFilePermissionAccess = jiofpa;
226 }
227
228 public static JavaIOFileDescriptorAccess getJavaIOFileDescriptorAccess() {
229 if (javaIOFileDescriptorAccess == null)
230 unsafe.ensureClassInitialized(FileDescriptor.class);
231
232 return javaIOFileDescriptorAccess;
233 }
234
235 public static void setJavaSecurityProtectionDomainAccess
236 (JavaSecurityProtectionDomainAccess jspda) {
237 javaSecurityProtectionDomainAccess = jspda;
238 }
239
240 public static JavaSecurityProtectionDomainAccess
241 getJavaSecurityProtectionDomainAccess() {
242 if (javaSecurityProtectionDomainAccess == null)
243 unsafe.ensureClassInitialized(ProtectionDomain.class);
244 return javaSecurityProtectionDomainAccess;
245 }
246
247 public static void setJavaSecurityAccess(JavaSecurityAccess jsa) {
248 javaSecurityAccess = jsa;
249 }
250
251 public static JavaSecurityAccess getJavaSecurityAccess() {
252 if (javaSecurityAccess == null) {
253 unsafe.ensureClassInitialized(AccessController.class);
254 }
255 return javaSecurityAccess;
256 }
257
258 public static JavaUtilZipFileAccess getJavaUtilZipFileAccess() {
259 if (javaUtilZipFileAccess == null)
260 unsafe.ensureClassInitialized(java.util.zip.ZipFile.class);
261 return javaUtilZipFileAccess;
262 }
263
264 public static void setJavaUtilZipFileAccess(JavaUtilZipFileAccess access) {
265 javaUtilZipFileAccess = access;
266 }
267
268 public static void setJavaAWTAccess(JavaAWTAccess jaa) {
269 javaAWTAccess = jaa;
270 }
271
272 public static JavaAWTAccess getJavaAWTAccess() {
273 // this may return null in which case calling code needs to
274 // provision for.
275 return javaAWTAccess;
276 }
277
278 public static void setJavaAWTFontAccess(JavaAWTFontAccess jafa) {
279 javaAWTFontAccess = jafa;
280 }
281
282 public static JavaAWTFontAccess getJavaAWTFontAccess() {
283 // this may return null in which case calling code needs to
284 // provision for.
285 return javaAWTFontAccess;
286 }
287
288 public static JavaBeansAccess getJavaBeansAccess() {
289 return javaBeansAccess;
290 }
291
292 public static void setJavaBeansAccess(JavaBeansAccess access) {
293 javaBeansAccess = access;
294 }
295
296 public static JavaUtilResourceBundleAccess getJavaUtilResourceBundleAccess() {
297 return javaUtilResourceBundleAccess;
298 }
299
300 public static void setJavaUtilResourceBundleAccess(JavaUtilResourceBundleAccess access) {
301 javaUtilResourceBundleAccess = access;
302 }
303
304 public static JavaObjectInputStreamAccess getJavaObjectInputStreamAccess() {
305 if (javaObjectInputStreamAccess == null) {
306 unsafe.ensureClassInitialized(ObjectInputStream.class);
307 }
308 return javaObjectInputStreamAccess;
309 }
310
311 public static void setJavaObjectInputStreamAccess(JavaObjectInputStreamAccess access) {
312 javaObjectInputStreamAccess = access;
313 }
314
315 public static void setJavaIORandomAccessFileAccess(JavaIORandomAccessFileAccess jirafa) {
316 javaIORandomAccessFileAccess = jirafa;
317 }
318
319 public static JavaIORandomAccessFileAccess getJavaIORandomAccessFileAccess() {
320 if (javaIORandomAccessFileAccess == null) {
321 unsafe.ensureClassInitialized(RandomAccessFile.class);
322 }
323 return javaIORandomAccessFileAccess;
324 }
325 }